Qt Creator: Unify file naming

<product>-<edition>-<platform>-<arch>-<version>.<ext>

Change-Id: I3c8ce938e3562d57acd75417d0b886e19e69e719
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>
Reviewed-by: Akseli Salovaara <akseli.salovaara@digia.com>